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 <h1>Migrating from PHP 5.1.x to PHP 5.2.x</h1>
<h2>Table of Contents</h2><ul class="chunklist chunklist_appendix"><li><a href="migration52.changes.html">What has changed in PHP 5.2.x</a></li><li><a href="migration52.incompatible.html">Backward Incompatible Changes</a></li><li><a href="migration52.error-messages.html">New Error Messages</a></li><li><a href="migration52.datetime.html">Changes in PHP datetime
   support</a></li><li><a href="migration52.parameters.html">New Parameters</a></li><li><a href="migration52.functions.html">New Functions</a></li><li><a href="migration52.methods.html">New Methods</a></li><li><a href="migration52.removed-extensions.html">Removed Extensions</a></li><li><a href="migration52.new-extensions.html">New Extensions</a></li><li><a href="migration52.classes.html">New Classes</a></li><li><a href="migration52.global-constants.html">New Global Constants</a></li><li><a href="migration52.class-constants.html">New Class Constants</a></li><li><a href="migration52.newconf.html">New INI Configuration Directives</a></li><li><a href="migration52.errorrep.html">Error Reporting</a></li><li><a href="migration52.other.html">Other Enhancements</a></li></ul>

 <p class="para">
  参见 PHP 版本迁移指南
  <a href="migration5.html" class="link">5.0.x</a>, 
  <a href="migration51.html" class="link">5.1.x</a>,
  <a href="migration53.html" class="link">5.3.x</a>,
  <a href="migration54.html" class="link">5.4.x</a> and
  <a href="migration55.html" class="link">5.5.x</a>.
 </p>

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
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